COSTILLA RESERVOIR NEAR COSTILLA

RESERVOIR LEVELS
February 10, 2025


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Costilla Dam, located in Taos, New Mexico, along the Rio Costilla, is a privately-owned structure with a primary purpose of irrigation. Built in 1920 by the USBR, this earth dam stands at a height of 137.5 feet and has a storage capacity of 30,499 acre-feet. The dam has a surface area of 416 acres and serves a drainage area of 55 square miles.

Despite being regulated by the Office of the State Engineer and undergoing regular inspections, Costilla Dam is classified as having a high hazard potential with a fair condition assessment. The dam's spillway is uncontrolled with a width of 35 feet, and it has a maximum discharge of 20,200 cubic feet per second. With a risk assessment rating of moderate, there is a need for ongoing risk management measures to ensure the safety and integrity of this essential water resource infrastructure for the surrounding community and environment.

Gage Height, Ft 24hr Change 0.09%
Percent of Normal 84%
Minimum 48.52 ft
2012-08-31
Maximum 105.87 ft
2010-06-14
Average 76 ft
Dam_Height 137.5
Hydraulic_Height 108
Drainage_Area 55
Year_Completed 1920
Nid_Storage 30499
Structural_Height 137.5
Primary_Dam_Type Earth
River_Or_Stream RIO COSTILLA
Foundations Unlisted/Unknown
Surface_Area 416
Hazard_Potential High
Outlet_Gates Valve - 0
Dam_Length 780
Nid_Height 138
Reservoir Levels
       

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